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New considerations for SIL verification of functional safety fieldbus communication
Ding L(丁龙); Wang H(王宏); Xu AD(徐皑冬); Li SX(李世兴)
作者部门工业控制网络与系统研究室
关键词Safety Integrity Level Functional Safety Fieldbus Communication Residual Error Probability Residual Error Rate Safety Communication Layer Safety Instrumented System
发表期刊Journal of Loss Prevention in the Process Industries
ISSN0950-4230
2016
卷号43页码:488-502
收录类别SCI ; EI
EI收录号20163002638678
WOS记录号WOS:000384775400052
产权排序1
资助机构863 Project (Project number: 2013AA040304) of China.
摘要Safety integrity level (SIL) verification of functional safety fieldbus communication is an essential part of SIL verification of safety instrumented system (SIS), and it requires quantifying residual error probability (RP) and residual error rate of function safety communication. The present quantification method of residual error rate uses RP of cyclic redundancy check (CRC) to approximately replace the total RP of functional safety communication. Since CRC only detects data integrity-related errors and CRC has intrinsically undetected error, some other residual errors are not being considered. This research found some residual errors of the present quantification method. Then, this research presents an extended new approach, which takes the found residual errors into account to determine more comprehensive and reasonable RP and residual error rate. From perspective of the composition of safety message, this research studies RPs of those controlling segments (sequence number, time expectation, etc.) to cover the found residual errors beyond CRC detection coverage, and the influences of insertion/masquerade errors and time window on RP are investigated. The results turn out these residual errors, especially insertion/masquerade errors, may have a great influence on quantification of residual error rate and SIL verification of functional safety communication, and they should be treated seriously.
语种英语
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文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/18833
专题工业控制网络与系统研究室
通讯作者Ding L(丁龙)
作者单位1.Key Laboratory of Networked Control Systems, Chinese Academy of Sciences, Shenyang Institute of Automation (SIA), University of Chinese Academy of Sciences (UCAS), 114 Nanta Street, Shenyang 110016, China
2.North Automation Control Technology Institute, 351 Tiyu Road, Taiyuan, 030006, China
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GB/T 7714
Ding L,Wang H,Xu AD,et al. New considerations for SIL verification of functional safety fieldbus communication[J]. Journal of Loss Prevention in the Process Industries,2016,43:488-502.
APA Ding L,Wang H,Xu AD,&Li SX.(2016).New considerations for SIL verification of functional safety fieldbus communication.Journal of Loss Prevention in the Process Industries,43,488-502.
MLA Ding L,et al."New considerations for SIL verification of functional safety fieldbus communication".Journal of Loss Prevention in the Process Industries 43(2016):488-502.
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